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Current Bid/RFP Opportunities

PLEASE NOTE: Public works projects (construction) are not included on this page. For bid information including planholder lists on public works projects, please contact ENGINEERING SERVICES at 925-756-1900 or check the Projects page of this website.

Current Requests for Proposal


The District is seeking proposals from qualified independent certified accounting firms interested in providing Audit Services. The Request for Qualifications (RFQ) describes the Project goals and scope of work. Interested firms are encouraged to participate in the selection process as defined in the RFQ. Proposals, meeting all of the RFQ requirements, must be submitted to the District no later than 3:00 PM on Monday, April 8, 2024.

Request for Qualification Annual Audit Services

Attachment A - General Services Contract Example

Attachment B - Maximum Price and Detailed Fee Schedule

Attachment C - Proposer Guarantees

Attachment D - Proposer Warranties

Copy of RFQ-Audit Services QA.pdf

Delta Diablo (District) uses Periscope (formerly BidSync) for most non-public works bids and RFP's. Please register here and you will automatically be notified of upcoming opportunities. 

Purchasing Contact Information 

Delta Diablo 
Purchasing Division 
2500 Pittsburg-Antioch Hwy 
Antioch, CA 94509